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• <br />• <br />Section 8: EXPOSURE CONTROLS, PERSONAL PROTECTION (Cont.) <br />8.3 EYE PROTECTION: Chemical goggles and preferably a full face shield. Requirements will vary <br />dependent upon work environment conditions and material handling practices. <br />Maintain an eyewash /safety shower in immediate work areas. <br />8.4 EXPOSURE GUIDELINES: <br />SODIUM HYDROXIDE <br />HYDROGEN SULFIDE <br />9.1 APPEARANCE: <br />9.2 ODOR: <br />9.3 BOILING POINT: <br />9.4 VAPOR PRESSURE: <br />9.5 VAPOR DENSITY: <br />9.6 SOLUBILITY IN WATER: <br />9.7 DENSITY: <br />9.8 FREEZING POINT: <br />9.9 pH: <br />9.10 VOLATILE: <br />OSHA <br />2 mg /m (ceiling) <br />20 ppm (ceiling) <br />10.2 HAZARDOUS POLYMERIZATION: Will not occur. <br />TWA STEL TLV STEL <br />2 mg /m <br />ACGIH <br />10 ppm (ceiling) <br />8.5 ENGINEERING CONTROLS: Engineering control methods to reduce hazardous vapor exposure are <br />preferred. Methods include mechanical ventilation (dilution and local exhaust) and process control. <br />Section 9: PHYSICAL and CHEMICAL PROPERTIES <br />Tan slurry liquid <br />Slight pungent odor <br />Not determined <br />Not determined <br />Not determined <br />Soluble <br />1.22 to 1.52 g /ml (10.16 — 12.66 lb /gal) at 25 °C (77 °F) <br />Not determined <br />13.5 <br />Not determined <br />10.1 STABILITY: Stable material under normal handling and storage conditions. <br />Page 4. <br />Section 10: STABILITY and REACTIVITY <br />10.3 HAZARDOUS DECOMPOSITION PRODUCTS: (Thermal decomposition) Heating product will <br />evolve H gas. Decomposition will evolve hydrogen sulfide, phosphine, oxides of sulfur. Decomposition <br />temperature range is 300 to 305 °C (572 to 581 °F). <br />10.4 INCOMPATIBILITY: Acids will cause the release of highly toxic hydrogen sulfide gas. Product <br />solution is not compatible with copper, zinc, aluminum or their alloys (i.e. bronze, brass, galvanized <br />metals, etc.) . Avoid elevated temperatures and heat. <br />